Thanks for the replies!

Is there something wrong or different about revision 1801?

What exactly do you guys mean by Hong Kong / China refurbs? Are these phones originally from the Chinese market, or just regular phones sent to China for repairs?

Is X-Terminal part of the stock N900 firmware, or is it an app you have to install separately?

So bottom line is that 100 quid might be too much for this.
I do however like your optimism about being able to find a BNIB N900. I recently missed out on an opportunity to get a new (never used) N900 from a US seller who didn't ship overseas, and I thought I'd never find a chance like that again.

I guess I'll just wait a little longer and see what comes up.